Coffee Machine Espresso Espresso coffee is produced by pushing hot water under pressure through grounds. There are many processes that happen behind the scenes to ensure consistent quality. The main components are water temperature and pressure. A good espresso machine allows you to control these variables for consistency in flavor https://coffeee77535.newsbloger.com/30383673/a-retrospective-what-people-discussed-about-best-budget-espresso-machine-20-years-ago